Detection of Signed Homonuclear Couplings between Low Abundant Nuclei

0367554 - ÚCHP 2012 CZ eng C - Konferenční příspěvek (zahraniční konf.)
Blechta, Vratislav - Schraml, Jan
Detection of Signed Homonuclear Couplings between Low Abundant Nuclei.
Book of Abstracts. Brno: Masaryk University, 2011 - (Marek, R.; Novotný, J.), C-16. ISBN 978-80-86441-34-4.
[NMR Vatltice /26./. Valtice (CZ), 01.05.2011-04.05.2011]
Grant CEP: GA AV ČR IAA400720706
Výzkumný záměr: CEZ:AV0Z40720504
Klíčová slova: signed coupling * linear spin system * sign of J(C,C)
Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie

The subject of this lecture is a modification of CSEc method for detection of signed homonuclear couplings. The new sequence is neither trivial nor simple application of the CSEc but some tricks are used to design broadband pulse sequence without selective pulses. The sequence was proved on a few samples by measuring carbon-carbon two- and three-bond couplings. For the first time signs of 2J(Si-O-Si) couplings were measured on a set of siloxane oligomers with different bond maps. The results will be presented.
Trvalý link: http://hdl.handle.net/11104/0202192